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/*
* Mesa 3-D graphics library
*
* Copyright (C) 2012-2013 LunarG, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Authors:
* Chia-I Wu <olv@lunarg.com>
*/
#ifndef ILO_BLIT_H
#define ILO_BLIT_H
#include "ilo_common.h"
#include "ilo_context.h"
#include "ilo_gpe.h"
#include "ilo_resource.h"
struct ilo_context;
void
ilo_blit_resolve_slices_for_hiz(struct ilo_context *ilo,
struct pipe_resource *res, unsigned level,
unsigned first_slice, unsigned num_slices,
unsigned flags);
static inline void
ilo_blit_resolve_slices(struct ilo_context *ilo,
struct pipe_resource *res, unsigned level,
unsigned first_slice, unsigned num_slices,
unsigned flags)
{
struct ilo_texture *tex;
unsigned flag_mask;
if (res->target == PIPE_BUFFER)
return;
tex = ilo_texture(res);
/*
* This function is called frequently and we need to make it run faster.
* As it is only used to resolve HiZ right now, return early when there is
* no HiZ.
*/
if (!ilo_texture_can_enable_hiz(tex, level, first_slice, num_slices))
return;
/*
* flags may be
*
* - ILO_TEXTURE_CPU_{READ,WRITE} (transfer)
* - ILO_TEXTURE_BLT_{READ,WRITE} (BLT copy or clear)
* - ILO_TEXTURE_RENDER_{READ,WRITE} (sample or render)
* - ILO_TEXTURE_CLEAR
*
* It is assumed there is at most one writer, and that readers read before
* writers write.
*/
if (ilo_texture_can_enable_hiz(tex, level, first_slice, num_slices)) {
ilo_blit_resolve_slices_for_hiz(ilo, res, level,
first_slice, num_slices, flags);
}
/* clear writers and clear state that are not set */
flag_mask =
ILO_TEXTURE_CPU_WRITE |
ILO_TEXTURE_BLT_WRITE |
ILO_TEXTURE_RENDER_WRITE;
if (flags & flag_mask)
flag_mask |= ILO_TEXTURE_CLEAR;
ilo_texture_set_slice_flags(tex, level,
first_slice, num_slices, flag_mask, flags);
}
static inline void
ilo_blit_resolve_resource(struct ilo_context *ilo,
struct pipe_resource *res,
unsigned flags)
{
unsigned lv;
for (lv = 0; lv <= res->last_level; lv++) {
const unsigned num_slices = (res->target == PIPE_TEXTURE_3D) ?
u_minify(res->depth0, lv) : res->array_size;
ilo_blit_resolve_slices(ilo, res, lv, 0, num_slices, flags);
}
}
static inline void
ilo_blit_resolve_surface(struct ilo_context *ilo,
struct pipe_surface *surf,
unsigned flags)
{
if (surf->texture->target == PIPE_BUFFER)
return;
ilo_blit_resolve_slices(ilo, surf->texture,
surf->u.tex.level, surf->u.tex.first_layer,
surf->u.tex.last_layer - surf->u.tex.first_layer + 1,
flags);
}
static inline void
ilo_blit_resolve_transfer(struct ilo_context *ilo,
const struct pipe_transfer *xfer)
{
unsigned flags = 0;
if (xfer->resource->target == PIPE_BUFFER)
return;
if (xfer->usage & PIPE_TRANSFER_READ)
flags |= ILO_TEXTURE_CPU_READ;
if (xfer->usage & PIPE_TRANSFER_WRITE)
flags |= ILO_TEXTURE_CPU_WRITE;
ilo_blit_resolve_slices(ilo, xfer->resource, xfer->level,
xfer->box.z, xfer->box.depth, flags);
}
static inline void
ilo_blit_resolve_view(struct ilo_context *ilo,
const struct pipe_sampler_view *view)
{
const unsigned flags = ILO_TEXTURE_RENDER_READ;
unsigned lv;
if (view->texture->target == PIPE_BUFFER)
return;
for (lv = view->u.tex.first_level; lv <= view->u.tex.last_level; lv++) {
unsigned first_slice, num_slices;
if (view->texture->target == PIPE_TEXTURE_3D) {
first_slice = 0;
num_slices = u_minify(view->texture->depth0, lv);
}
else {
first_slice = view->u.tex.first_layer;
num_slices = view->u.tex.last_layer - view->u.tex.first_layer + 1;
}
ilo_blit_resolve_slices(ilo, view->texture,
lv, first_slice, num_slices, flags);
}
}
static inline void
ilo_blit_resolve_framebuffer(struct ilo_context *ilo)
{
const struct pipe_framebuffer_state *fb = &ilo->fb.state;
unsigned sh, i;
/* Not all bound views are sampled by the shaders. How do we tell? */
for (sh = 0; sh < Elements(ilo->view); sh++) {
for (i = 0; i < ilo->view[sh].count; i++) {
if (ilo->view[sh].states[i])
ilo_blit_resolve_view(ilo, ilo->view[sh].states[i]);
}
}
for (i = 0; i < fb->nr_cbufs; i++)
ilo_blit_resolve_surface(ilo, fb->cbufs[i], ILO_TEXTURE_RENDER_WRITE);
if (fb->zsbuf)
ilo_blit_resolve_surface(ilo, fb->zsbuf, ILO_TEXTURE_RENDER_WRITE);
}
void
ilo_init_blit_functions(struct ilo_context *ilo);
#endif /* ILO_BLIT_H */
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